Enhanced Collision Avoidance for Distributed LTE Vehicle to Vehicle Broadcast Communications

Jianhua He, Zuoyin Tang, Zhong Fan, Jie Zhang

Research output: Contribution to journalArticlepeer-review


In this paper we investigate the distributed autonomous resource selection for LTE vehicle to vehicle (V2V) broadcast. The effectiveness of collision avoidance and location based resource allocation enhancements is examined. It is found that collision avoidance with multiple data resources reservation per schedule assignment (SA) is a key to improve broadcast reliability. However in the existing collision avoidance algorithm reserving multiple resources per SA can lead to many data packet collisions if a SA collision happens. We propose an enhanced collision avoidance to address this issue. The idea is to use selected data packets to disseminate the reservation of data resources and SA resources, which can provide better communication among neighbor vehicles on resource reservation and reduce data collisions. Simulation results show that the proposed collision avoidance enhancement can effectively improve SA and data transmission reliability. The network capacity in terms of supported vehicles under given V2V service requirements is largely increased by 17% at a negligible cost of added overhead.
Original languageEnglish
Pages (from-to)630 - 633
Number of pages4
JournalIEEE Communications Letters
Issue number3
Early online date9 Jan 2018
Publication statusPublished - 1 Mar 2018

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  • LTE
  • vehicle to vehicle (V2V)
  • connected vehicles
  • resource scheduling
  • semi-persistent scheduling (SPS)


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